Analysis of the most affected countries in South America

Cross-country comparison over absolute dates

Confirmed

Dead

Daily Dead (7-Day Average)

Active

Cross-country comparison with approximately aligned start days

Confirmed

Dead

Daily Dead (7-Day Average)

Active

Per-country analysis with exponential and sigmoidal projections, and new cases analysis

IMPORTANT: The projections are only accurate if the fit is good (it often isn't), and assuming nothing changes going forward. The sigmoid is omitted if a reasonable fit can't be computed, but this still doesn't mean that the fit is good if it is shown.

The dashed lines show best fit projections from a few previous days for comparison.

Ecuador

Population $17,643,054$

Confirmed

Start date 2020-03-14 (1st day with 1 confirmed per million)

Latest number $38,571$ on 2020-05-30

Best fit exponential: \(4 \times 10^{3} \times 10^{0.014t}\) (doubling rate \(21.9\) days)
Best fit sigmoid: \(\dfrac{36,858.9}{1 + 10^{-0.054 (t - 42.7)}}\) (asimptote \(36,858.9\))

Dead

Start date 2020-03-14 (1st day with 0.1 dead per million)

Latest number $3,334$ on 2020-05-30

Best fit exponential: \(130 \times 10^{0.019t}\) (doubling rate \(15.7\) days)
Best fit sigmoid: \(\dfrac{3,772.6}{1 + 10^{-0.045 (t - 56.7)}}\) (asimptote \(3,772.6\))

Active

Start date 2020-03-14 (1st day with 1 active per million)

Latest number $16,047$ on 2020-05-30

Brazil

Population $212,559,417$

Confirmed

Start date 2020-03-17 (1st day with 1 confirmed per million)

Latest number $498,440$ on 2020-05-30

Best fit exponential: \(6.01 \times 10^{3} \times 10^{0.026t}\) (doubling rate \(11.7\) days)
Best fit sigmoid: \(\dfrac{1,258,456.3}{1 + 10^{-0.032 (t - 81.4)}}\) (asimptote \(1,258,456.3\))

Dead

Start date 2020-03-22 (1st day with 0.1 dead per million)

Latest number $28,834$ on 2020-05-30

Best fit exponential: \(657 \times 10^{0.024t}\) (doubling rate \(12.6\) days)
Best fit sigmoid: \(\dfrac{46,105.1}{1 + 10^{-0.035 (t - 64.2)}}\) (asimptote \(46,105.1\))

Active

Start date 2020-03-17 (1st day with 1 active per million)

Latest number $268,714$ on 2020-05-30

Peru

Population $32,971,854$

Confirmed

Start date 2020-03-14 (1st day with 1 confirmed per million)

Latest number $155,671$ on 2020-05-30

Best fit exponential: \(3.13 \times 10^{3} \times 10^{0.022t}\) (doubling rate \(13.7\) days)
Best fit sigmoid: \(\dfrac{207,576.7}{1 + 10^{-0.036 (t - 67.4)}}\) (asimptote \(207,576.7\))

Dead

Start date 2020-03-21 (1st day with 0.1 dead per million)

Latest number $4,371$ on 2020-05-30

Best fit exponential: \(122 \times 10^{0.022t}\) (doubling rate \(13.4\) days)
Best fit sigmoid: \(\dfrac{5,891.0}{1 + 10^{-0.037 (t - 60.1)}}\) (asimptote \(5,891.0\))

Active

Start date 2020-03-14 (1st day with 1 active per million)

Latest number $84,853$ on 2020-05-30

Chile

Population $19,116,201$

Confirmed

Start date 2020-03-11 (1st day with 1 confirmed per million)

Latest number $94,858$ on 2020-05-30

Best fit exponential: \(818 \times 10^{0.026t}\) (doubling rate \(11.8\) days)

Dead

Start date 2020-03-23 (1st day with 0.1 dead per million)

Latest number $997$ on 2020-05-30

Best fit exponential: \(23.8 \times 10^{0.023t}\) (doubling rate \(12.9\) days)

Active

Start date 2020-03-11 (1st day with 1 active per million)

Latest number $53,430$ on 2020-05-30

Bolivia

Population $11,673,021$

Confirmed

Start date 2020-03-18 (1st day with 1 confirmed per million)

Latest number $9,592$ on 2020-05-30

Best fit exponential: \(65.6 \times 10^{0.029t}\) (doubling rate \(10.3\) days)
Best fit sigmoid: \(\dfrac{65,375.0}{1 + 10^{-0.031 (t - 98.8)}}\) (asimptote \(65,375.0\))

Dead

Start date 2020-03-30 (1st day with 0.1 dead per million)

Latest number $310$ on 2020-05-30

Best fit exponential: \(12 \times 10^{0.023t}\) (doubling rate \(12.9\) days)
Best fit sigmoid: \(\dfrac{700.6}{1 + 10^{-0.030 (t - 64.8)}}\) (asimptote \(700.6\))

Active

Start date 2020-03-18 (1st day with 1 active per million)

Latest number $8,393$ on 2020-05-30

Colombia

Population $50,882,891$

Confirmed

Start date 2020-03-16 (1st day with 1 confirmed per million)

Latest number $26,734$ on 2020-05-30

Best fit exponential: \(725 \times 10^{0.021t}\) (doubling rate \(14.4\) days)
Best fit sigmoid: \(\dfrac{63,272.0}{1 + 10^{-0.026 (t - 81.4)}}\) (asimptote \(63,272.0\))

Dead

Start date 2020-03-26 (1st day with 0.1 dead per million)

Latest number $891$ on 2020-05-30

Best fit exponential: \(62.9 \times 10^{0.018t}\) (doubling rate \(16.9\) days)
Best fit sigmoid: \(\dfrac{1,215.7}{1 + 10^{-0.029 (t - 53.6)}}\) (asimptote \(1,215.7\))

Active

Start date 2020-03-16 (1st day with 1 active per million)

Latest number $18,908$ on 2020-05-30

Argentina

Population $45,195,774$

Confirmed

Start date 2020-03-16 (1st day with 1 confirmed per million)

Latest number $16,214$ on 2020-05-30

Best fit exponential: \(514 \times 10^{0.019t}\) (doubling rate \(15.4\) days)

Dead

Start date 2020-03-24 (1st day with 0.1 dead per million)

Latest number $528$ on 2020-05-30

Best fit exponential: \(51 \times 10^{0.015t}\) (doubling rate \(19.5\) days)
Best fit sigmoid: \(\dfrac{679.4}{1 + 10^{-0.027 (t - 50.5)}}\) (asimptote \(679.4\))

Active

Start date 2020-03-16 (1st day with 1 active per million)

Latest number $10,898$ on 2020-05-30

Uruguay

Population $3,473,730$

Confirmed

Start date 2020-03-13 (1st day with 1 confirmed per million)

Latest number $821$ on 2020-05-30

Best fit exponential: \(238 \times 10^{0.008t}\) (doubling rate \(40.1\) days)
Best fit sigmoid: \(\dfrac{769.1}{1 + 10^{-0.034 (t - 25.5)}}\) (asimptote \(769.1\))

Dead

Start date 2020-03-28 (1st day with 0.1 dead per million)

Latest number $22$ on 2020-05-30

Best fit exponential: \(5.97 \times 10^{0.010t}\) (doubling rate \(30.3\) days)
Best fit sigmoid: \(\dfrac{22.1}{1 + 10^{-0.038 (t - 24.1)}}\) (asimptote \(22.1\))

Active

Start date 2020-03-13 (1st day with 1 active per million)

Latest number $117$ on 2020-05-30

Recovering countries that had over 300 active cases at peak

List of all recovering countries (the top 4 not covered above are also analyzed below)